More than two dozen tornadoes have been reported in the first severe thunderstorm outbreak of the season, and a third day was gaining momentum Thursday morning.

This week, the most severe weather has been restricted to Oklahoma, Kansas, Nebraska and Missouri. On Thursday, the threat spreads north and east as low pressure slides toward the Great Lakes. The Storm Prediction Center has issued an enhanced risk of severe thunderstorms in parts of Iowa and Missouri. A slight risk is in effect from Northeast Ohio to Southern New England.

Wednesday marked the end of a tornado drought in Oklahoma. Before that, the state had not had a tornado touch down in 2018, which is the longest Oklahoma had gone into the calendar year without a twister. The Capital Weather Gang’s Ian Livingston reported last week:

On average, about 12 tornadoes form in Oklahoma during April. It’s typically the state with the third most tornadoes annually, as well as home to some of the highest tornado odds per square mile. The longest Oklahoma had previously gone without a tornado was until April 26 in 1962.

The National Weather Service confirmed a tornado touched down in Norman, Okla., Wednesday night with a rating of at least EF-1. That survey was ongoing as of Thursday morning.

Storm chaser Francis Lavigne-Theriault captured the beginnings of a tornado that touched down in Culver, Kan., on May 1. (Francis Lavigne-Theriault)

Several tornadoes touched down in the Plains Tuesday night, one of them a large twister in Kansas that was later rated an EF-3 by the National Weather Service. Despite tracking for more than 14 miles across Kansas with winds reaching 140 mph, no injuries were reported because of the storm. The tornado tracked near the Kansas towns of Tescott and Bennington around 8 p.m. Central. Several storm chasers were in position to capture dramatic photos and video of the tornado.